The title of the new film appears to be derived from Jackson’s Elijah Price character in “Unbreakable” — also known by his pseudonym Mr. Glass. Willis also returns as David Dunn from “Unbreakable.”

McAvoy is reprising his “Split” role as Kevin Wendell Crumb and the 23 multiple identities, including The Beast who resides within. Also returning is Taylor-Joy as Casey Cooke, whose character survives in the film.

“Glass” will follow the conclusion of “Split” with Dunn pursuing McAvoy’s The Beast in “a series of escalating encounters, while the shadowy presence of Price emerges as an orchestrator who holds secrets critical to both men.”

Producers are Shyamalan and Jason Blum, who also backed “Split” and “The Visit” for Universal. They produce again with Ashwin Rajan and Marc Bienstock. Steven Schneider will executive produce.

“Unbreakable” was released in 2000 and grossed nearly $250 million worldwide. Willis portrayed a security guard who survives a train crash and learns, thanks to Jackson’s comic book store owner, that he possesses superhuman powers.

“Split,” made for $9 million, has been a surprise success for Universal, hauling $275 million at the global box office. McAvoy portrayed a victim of childhood abuse diagnosed with dissociative identity disorder who kidnaps and imprisons three teenage girls. Willis made a brief uncredited cameo as David Dunn in “Split.”

I don't really know what Anya's role in the movie will be. Maybe Bruce simply interviews her to get some information on the Beast? Or maybe he needs her because now that the doctor is dead.. she knows the most about his separate personalities??

Or maybe they didn't really have any concrete plans for her. But they brought her back for dat ass!

Samuel L. Jackson's Elijah Price, a.k.a. Mr. Glass, will be locked up with David Dunn (Bruce Willis) and "The Beast" (James McAvoy) in a prison where they're under the observation of Sarah Paulson's character. It seems that at some point, Glass and The Beast will team-up to take on Dunn and Anya Taylor-Joy's Casey from Split, which sounds pretty awesome.